You won’t believe me, but after two days of trying-hard to get my first .ini basic functionality, your post just saved the day! Thanks!
I tried get to work that SaveConfig() in so many combinations, for some reason it does not work at all and it is nowhere mentioned.
BTW love your Restart Editor & Level Bookmarks, good stuff! Although LvlBookmarks not working for some reason:) It Saves but only until next Editor launch 
Didn’t found where I can report and explain some info about the issue from my perspective since there is no longer ability to answer Questions under product like it was before Fab.